Which of the following pairs of sets given below are not equivalent?
a. Y={a,b,c}
Z= {7,9, 10}
B. T= {algebra, geometry, trigonometry}
V= {geometry, trigonometry, algebra}
c. W= {grapes,apples,oranges}
X= {grapes,peaches, apples, oranges}
d. R is the set of letters in the world "bank"
S is the set letters in the world "post"